EP3349947A1 - Dispositif de communication pour une machine-outil électrique, système d'outil électrique et procédé - Google Patents

Dispositif de communication pour une machine-outil électrique, système d'outil électrique et procédé

Info

Publication number
EP3349947A1
EP3349947A1 EP16763242.1A EP16763242A EP3349947A1 EP 3349947 A1 EP3349947 A1 EP 3349947A1 EP 16763242 A EP16763242 A EP 16763242A EP 3349947 A1 EP3349947 A1 EP 3349947A1
Authority
EP
European Patent Office
Prior art keywords
power tool
electric actuator
data
machine tool
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16763242.1A
Other languages
German (de)
English (en)
Other versions
EP3349947B1 (fr
Inventor
Istvan SZELL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3349947A1 publication Critical patent/EP3349947A1/fr
Application granted granted Critical
Publication of EP3349947B1 publication Critical patent/EP3349947B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose

Definitions

  • the invention relates to a communication device for an electric machine tool, in particular a power tool, comprising at least one electric actuator and a control unit for controlling the
  • Electroactuator with a machine tool associated transmitting device for transmitting data and with a mobile or stationary device associated receiving device for receiving the data.
  • the invention relates to a power tool system for such a power tool and a method for operating a
  • Hand tool machines are usually understood as stand-alone devices that provide all control and information functions themselves, so that the user can directly make controls on the machine tool and read information.
  • Internet of Things By networking products with each other by means of the so-called Internet of Things, new possibilities are made available by means of which a decentralized information output or control input, which is resolved by the machine tool, becomes possible.
  • the machine tool can be remotely controlled by an external or separate device or its operating status can be checked.
  • communication devices are used that use different data transmission options. So are
  • a disadvantage of the known communication devices is that in addition to an already existing in the machine tool electronics also a transmitting device must be integrated, which transmits, for example, operating data of the machine tool to the separate device wirelessly. Disclosure of the invention
  • the communication device with the features of claim 1 has the advantage that already existing in the machine tool means for sending the data are used. As a result, it is possible to dispense with the addition and constructive planning of an additional transmitting device. It provides a particularly compact and cost effective solution by which it is possible to send data from the machine tool wirelessly to the separate device.
  • the receiving device has at least one microphone, and that the control unit forms the transmitting unit together with the electroactuator and drives the electroactuator for generating an acoustic signal to be detected by the microphone for transmitting data.
  • Communication device thus uses the acoustic transmission of data.
  • the control unit controls the electric actuator such that it generates an audio signal or one or more defined sounds that can be detected and evaluated by the microphone of the receiving device.
  • the transmitting unit of the communication device is thus formed according to the invention by the control unit and the electro-actuator together.
  • existing elements for data transmission are used in the machine tool. Alone through the programming of Control unit for the corresponding activation of the electric actuator is achieved that data of the electric machine tool are sent acoustically.
  • control unit has power electronics with at least one electrically operable switching element, in particular power semiconductor switch.
  • switching element in particular power semiconductor switch.
  • the electric actuator is designed as an electric motor.
  • the control unit can, for example, stimulate the electric motor to generate specific acoustic information which is emitted by the microphone
  • Receiving device can be detected.
  • a housing of the machine tool is used as an acoustic amplifier and / or conductor.
  • the electric actuator is an electric solenoid actuator, which operates, for example, a valve or the like. By a corresponding control of this electric actuator, it is possible to selectively generate an acoustic signal that can be detected and evaluated by the microphone.
  • Claim 4 is characterized by the inventive
  • Electric actuator of the electric hand tool together the transmitting device and the mobile or stationary device has the associated
  • the device is designed as a mobile computer or mobile phone. This allows the user in a simple way and manner, for example by playing a corresponding
  • the inventive method with the features of claim 6 is characterized in that for transmitting data of the electric actuator for
  • Receiving device is detected and evaluated. This results in the already mentioned advantages.
  • the electric actuator is controlled in such a way that it generates noises without any actuation.
  • the electric actuator by the control actually assigned to him function, such as the operation of the valve or the generation of torque, and instead only generates a targeted noise or acoustic signal.
  • the electric motor is driven to generate the signal such that it is controlled torque-free or rotation-free, so no torque and no rotation generated.
  • the electric motor thus no actuation, for example no driving of a tool. This ensures that the data is sent by sending the data
  • Machine tool is in a reliable condition and in particular no unwanted Aktutechniken done.
  • the electric actuator is controlled as an electric motor pulse width modulated.
  • Figure 2 shows a communication device of the power tool system in a simplified representation
  • FIG. 3 shows an example of a signal transmitted by the communication device.
  • FIG. 1 shows, in a simplified representation, a power tool system 1 with a power tool 2, which is designed as a hand-screw machine.
  • the electric machine tool 2 has an electric actuator 3 in the form of an electric motor, and a control unit 4 which controls the electric actuator 3 in response to an actuation of a control element 5 to drive a tool holder 5 in one of two directions of rotation.
  • Power tool system 1 further comprises a separate device 6 from the power tool 2, which is designed as a mobile phone and has a touch-sensitive screen 7 for displaying information and for inputting control commands.
  • the power tool system 1 furthermore has a communication device 8, which has a transmitting device 9 assigned to the power tool 2 and a receiving device 10 assigned to the device 6.
  • the receiving device 10 has a microphone 11, which in the present case is the microphone 11 of the mobile phone 6, which is used in normal operation for receiving speech.
  • the transmitting device 9 is formed by the control unit 4 and the electric motor.
  • the control unit 4 is designed to control the electric actuator 3 for transmitting data in such a way that it generates one or more noises to generate an acoustic signal generated without causing a drive of the tool holder 5 takes place.
  • the control unit 4 controls, for example, a power electronics 15 arranged upstream of the electric motor
  • the control unit 4 controls the electric motor in such a way that it generates an acoustic signal wholly without its own motion solely by the electrical control, which signal can be detected by the microphone 11 of the receiving device 10.
  • the receiving device 10 detects when sufficient
  • volume of the generated acoustic signal the acoustic signal and evaluates this to read out the data sent by the transmitter 9 data.
  • FIG. 2 shows a simplified partial view of this
  • the control unit 4 has means or one
  • Electric machine tool 2 on.
  • one or more temperature values of different components of the power tool 2 are detected by the device 12. It is also conceivable by the device 12, the state of charge of a rechargeable battery
  • Electric power tool 2 to capture. It is also conceivable that a current, a voltage or an acceleration of the electric motor are detected.
  • the device 12 can read from a memory of the control unit 4, for example, a serial number, a machine type operating time, error messages or the like.
  • the data acquired by the device 12 are in particular optionally or as required by an encoder 13 in a format that is suitable for the data transmission means of the transmitting device 9. If necessary, the coding can also be extended with an error correction.
  • a device 14 prepares the formatted data, which are available in particular as a data packet, for the acoustic transmission.
  • the data packet is subjected to frequency shift keying (FSK).
  • FSK frequency shift keying
  • the digital data to be transmitted in an advantageous manner for the acoustic data transmission brought appropriate shape.
  • the control unit 4 controls the power electronics 15 of the actuator 3 and the electric motor 16. It is done by the
  • Power electronics 15 a pulse width modulated control of the
  • the duty cycle of the pulse width modulation is chosen such that the electric motor 16 on the one hand does not begin to rotate, and on the other hand generates an acoustic signal as described above.
  • the electric motor 16 is excited to move, which mechanically generates the acoustic signal as desired. This can be the
  • Electric motor 16 for example, be driven so that it vibrates instead of rotating. This mechanical movement generates sound waves that are emitted directly or indirectly.
  • the sound waves are amplified by a housing of the power tool 2.
  • the sound waves are shown in simplified form in FIG. 2 as curved lines.
  • the microphone 11 of the receiving device 10 detects the sound waves that reach the microphone 11 directly or indirectly, for example via an intermediate medium.
  • a demodulation device 17 converts the acoustic signal again into digital data / values, which are translated or decoded by a decoder 18 and a device 19 in readable
  • the device 19 may be, for example, a control unit of the mobile phone 6, which displays the data become known through the screen 7 to the user.
  • information presented by the power tool 2 can be wirelessly transmitted to the device 6 by an acoustic signal and displayed there by the presented communication device 8.
  • the provision of a loudspeaker device for generating the acoustic signal is dispensed with. Rather, in the power tool 2 already existing components are used to generate the acoustic signal. As a result, a simple and compact communication device 8 is provided, which also readily in an existing
  • Electric machine tool 2 can be integrated by a corresponding programming of the control unit 4.
  • any terminal may be used which has a microphone for detecting the acoustic signal.
  • FIG. 3 shows by way of example a transmitted audio signal.
  • the communication device 8 works with a 32-letter alphabet. Each letter is given by a different frequency of the audio signal
  • Pulse width modulation duty cycle too. It is preferred that, as already mentioned, the duty cycle is so low that the electric motor 16 is not placed in a rotational movement. The duty cycle is preferred depending on the inertia of the mechanical components to be driven
  • Embodiment with a hand screwdriver for example, a duty cycle of 13% is advantageous.
  • the audio signal shown in Figure 3 can be optimized in terms of its quality advantageously by increasing the duty cycle and by generating a sine signal.
  • the inductance of the electric motor 16 can be used as a low-pass filter for smoothing steep edges.
  • the audio signal has different amplitudes for different frequencies. This is due to the non-linearity of the electric motor 16 and the resonance of the housing of the Power Tool Machine 2. This can be improved by adjusting the duty cycle individually for each frequency.
  • the communication device 8 can be used or used both in battery-powered and in wired power tools.
  • the frequency modulation is a good choice for the data transmission.
  • the transmitting device 9 in almost any particular battery-powered
  • Electric machine tool 2 can be used.
  • the communication device 8 can be used, for example, to test the manufactured product at the end of the tape during production. Furthermore, it is possible through the
  • Communication device perform a product identification, for example, the product name, a software and / or hardware version query.
  • users can use the installed application to learn more about the power tool 2, which is, for example, an exhibit in a store.
  • errors of the power tool 2 can be read out by the communication device 8 in a simple manner and, for example, forwarded to a service center.
  • data about the product identification for example, the product name, a software and / or hardware version query.
  • users can use the installed application to learn more about the power tool 2, which is, for example, an exhibit in a store.
  • errors of the power tool 2 can be read out by the communication device 8 in a simple manner and, for example, forwarded to a service center.
  • data about the power tool 2 can be read out by the communication device 8 in a simple manner and, for example, forwarded to a service center.
  • Operation of the power tool 2 are detected and used for market analysis.
  • the data is sent, for example, directly from the mobile phone to a central server, where the data can be collected and evaluated.
  • warning signals can be generated when, for example, the power tool 2 reaches a critical temperature or threatens to reach a critical temperature, in which case the operation of the power tool 2 is preferably set automatically.
  • the transmitting device 9 can notify different events by different acoustic signals.
  • the audio signal can be used to operate an interactive
  • Operating instructions are used so that, for example, in case of failure, the electric tool by a corresponding acoustic signal leads the user to a specific page in the manual, which is relevant for the current error case.
  • the power tool 2 by the Communication device 8 identified and located using the mobile phone.
  • the transmitting device may send measured or calculated data that may be used to calculate or estimate further values, such as an estimated remaining operating time, the number of times screwed in, or still to be screwed
  • Screw the state of charge, voltage, temperature, the general condition of a battery and / or an estimated waiting time after an error, in particular a load.
  • the power tool 2 can transmit information to the user, the bandwidth of the
  • Information transmission is advantageously between 0.3 kHz and 3 kHz.
  • an accessory such as a
  • Extra unit that can be attached to the power tool 2, wirelessly controlled by the acoustic signal.
  • the headphone jack of the mobile phone can also be connected to a charging port of the
  • Electric machine tool 2 are connected, optionally under
  • the control unit which in particular has a microcontroller, can be used as a digital amplifier.
  • the electric motor can be used directly as a vibration speaker as described above.
  • the engine could also with a
  • Speaker device are connected, for example, to amplify the acoustic signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Control Of Electric Motors In General (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Portable Power Tools In General (AREA)

Abstract

L'invention concerne un dispositif de communication (8) pour une machine-outil électrique (2), en particulier une machine-outil portative, qui comprend au moins un actionneur électrique (3) et une unité de commande (4) pour la commande de l'actionneur électrique (3), comprenant un dispositif de transmission (9), associé à la machine-outil électrique (2), pour la transmission de données et comprenant un dispositif de réception (10), associé à un dispositif mobile ou fixe (6), pour la réception des données. Selon l'invention, le dispositif de réception (10) comprend au moins un microphone (11), et l'unité de commande (4) forme, conjointement avec l'actionneur électrique (3), le dispositif de transmission (9), et commande l'actionneur électrique (3) pour la génération d'un signal acoustique devant être capté par le microphone (11) en vue de la transmission de données.
EP16763242.1A 2015-09-17 2016-09-07 Dispositif de communication pour une machine-outil électrique, système d'outil électrique et procédé Active EP3349947B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015217826.9A DE102015217826A1 (de) 2015-09-17 2015-09-17 Kommunikationseinrichtung für eine elektrische Werkzeugmaschine, Elektrowerkzeugsystem und Verfahren
PCT/EP2016/071037 WO2017045980A1 (fr) 2015-09-17 2016-09-07 Dispositif de communication pour une machine-outil électrique, système d'outil électrique et procédé

Publications (2)

Publication Number Publication Date
EP3349947A1 true EP3349947A1 (fr) 2018-07-25
EP3349947B1 EP3349947B1 (fr) 2020-07-22

Family

ID=56893962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16763242.1A Active EP3349947B1 (fr) 2015-09-17 2016-09-07 Dispositif de communication pour une machine-outil électrique, système d'outil électrique et procédé

Country Status (6)

Country Link
US (1) US11575449B2 (fr)
EP (1) EP3349947B1 (fr)
JP (1) JP2018528870A (fr)
CN (1) CN108025428A (fr)
DE (1) DE102015217826A1 (fr)
WO (1) WO2017045980A1 (fr)

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Also Published As

Publication number Publication date
JP2018528870A (ja) 2018-10-04
US20180331768A1 (en) 2018-11-15
US11575449B2 (en) 2023-02-07
WO2017045980A1 (fr) 2017-03-23
EP3349947B1 (fr) 2020-07-22
CN108025428A (zh) 2018-05-11
DE102015217826A1 (de) 2017-03-23

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